Lightroom or Canon EOS Utility tethering is always described as a USB cable attachment. There's always the issue of the signal weakened or corrupted by an overly long USB cable...

But what about the [overpriced, I know] WTF-5 adapter? (This piece should be renamed "WTF", given that it costs new what some lenses cost.) I saw one on eBay at $400 and thought I could start watching for a more reasonable unit to use with a 1DsMk3 I hope to buy soon. Architecture, studio, other tethered scenarios. So far I have come up with a pretty reliable cabling but maybe an alternative is a good idea.

Don,Thanks for those suggestions. I already have a solution for USB that seems to work OK: A "Tripp" brand USB cord with ahub with a signal -- what? -- repeater? amplifier? I think I have a couple of the twenty-five footers, and they work in tandem as extensions to a USB-to-miniUSB needed to connect to the body.

I was wondering if I find a WiFi unit at a reasonable cost if my tethering can work over Ethernet (cat5e cable). There would be other problems WiFi would solve, like impossible cable situations. "docHoliday" here has described some uses of WiFi, no cables, for staff to watch the images coming across in an adjacent room. Clients love this stuff!

It is a wireless USB extender and normally works up to 100 or so meters... I replaced the toy antennas with a pair of 28db gain dishes and have a rock-solid link to some instruments about a kilometer away. It works fine, but there is definitly delay. Even on a short link there is a noticeable delay over the straight USB cable.